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An interference cancellation technique is described for improving the dynamic range of receivers. A feedforward approach is used to attenuate large interferers before the down-conversion mixer in a receiver. This is accomplished with no measurable impact on the in-band noise performance. Techniques to cancel interference within a narrowband and also in multiple bands are described. Simulation results and measurements from a discrete prototype system are used to validate the approach.
Circuits and Systems II: Express Briefs, IEEE Transactions on (Volume:54 , Issue: 10 )
Date of Publication: Oct. 2007